Yep, a DVM that puts a load on the battery is best.

JRjoe.....Indoor plumbing??? No, we don't need that!!!

using a load tester is best but sometimes i get lazy and just do a few quick pitch pumps on the bench while watching how low the voltage goes in real time on my spektrum flight log. the load with this method is of course system dependent and also dependent on how fast you move the sticks but in my case it seems to be around 2A. your mileage may vary.